Q: Is 20,009 a Prime Number?
A: No, 20,009 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 20009 can be evenly divided by 1 11 17 107 187 1,177 1,819 and 20,009, with no remainder.
Since 20,009 cannot be divided by just 1 and 20,009, it is not a prime number.